NEW APPROACH;ON SEISMIC HAZARD ISOSEISMAL MAP FOR ROMANIA

The seismicity of Romania comes from the energy that is released by crustal earthquakes, which have a depth not more than 40 km, and by the intermediate earthquakes coming from Vrancea region (unique, case in Europe) with a depth between 60 and 200 1cm. The authors developed the concept of "control earthquake" and equations to obtain the banana shape of the attenuations curves of the macroseimic intensity I (along the directions defined by azimuth Az), in the case of an Vrancea earthquake at a depth 80 < x < 160 km. There were used deterministic and probabifistic approaches, linear and nonlinear ones. The final map is in MMI intensity (isoseismal map) for maximum possible Vrancea earthquake with Richter magnitude, M(GR) = 7.5. This will avoid any drawbacks to civil structural designers and to insurance companies which are paying all damages and life loses in function of earthquake intensity.